u

src/routes/admin.js

@@ -270,4 +270,4 @@ router.delete('/buchungsschluessel/:id', authenticateToken, async (req, res) =>
   }
 });
 
-module.exports = router; 
+module.exports = router; 

src/routes/data/bankingTransactions.js

@@ -143,8 +143,8 @@ router.get('/assignable-kreditors', authenticateToken, async (req, res) => {
     
     const query = `
       SELECT id, name, kreditorId
-      FROM fibdash.Kreditor 
-      WHERE is_banking = 0
+      FROM fibdash.Kreditor
+      WHERE (is_banking = 0 OR is_banking IS NULL)
       ORDER BY name
     `;
     

src/routes/data/kreditors.js

@@ -58,8 +58,9 @@ router.post('/kreditors', authenticateToken, async (req, res) => {
       return res.status(400).json({ error: 'Name and kreditorId are required' });
     }
     
-    if (!isBanking && (!iban || iban.trim() === '')) {
-      return res.status(400).json({ error: 'IBAN is required (except for banking accounts)' });
+    // Business rule: IBAN is required for banking kreditors (proxies), not required for real kreditors
+    if (isBanking && (!iban || iban.trim() === '')) {
+      return res.status(400).json({ error: 'IBAN is required for banking kreditors' });
     }
     
     if (iban && iban.trim() !== '') {
@@ -108,8 +109,9 @@ router.put('/kreditors/:id', authenticateToken, async (req, res) => {
       return res.status(400).json({ error: 'Name and kreditorId are required' });
     }
     
-    if (!isBanking && (!iban || iban.trim() === '')) {
-      return res.status(400).json({ error: 'IBAN is required (except for banking accounts)' });
+    // Business rule: IBAN is required for banking kreditors (proxies), not required for real kreditors
+    if (isBanking && (!iban || iban.trim() === '')) {
+      return res.status(400).json({ error: 'IBAN is required for banking kreditors' });
     }
     
     const checkQuery = `SELECT id FROM fibdash.Kreditor WHERE id = @id`;